Відповіді: Стр.24 (2)

2. Fill in should/shouldn’t, must/mustn’t, hove to/don't have to.

1. You must be in time for all your lessons!

2. We don’t have to take our sports clothes – there’s no PE today.

3. Bill can't do this task – you should help him.

4. Molly shouldn’t go to school by bike – it's raining.

5. I have to do my homework before I meet with my friends.

6. The students mustn't be dirty and untidy at school.